Hi guys, need some advice from other people's lessons learned and search is only getting me a crick in my neck.

I've been running a zuk with a set of 85 toy axles and 2" spacers on the front for about a year and a half.

I'm getting sick of breaking toy CV's from bending them too much. I want to go to an offset rear axle. I'm also sick of being so narrow in the rear (falling off obstacles and falling over all the time).

I'm considering a T100 / Tundra rear with the passenger's side cut down.

Stock Tundra is 66 3/4 inches. My front is only 59" with the spacers. I figure if I cut 8" out of the passenger's side of the T100 axle it will be a huge improvement in driveshaft angle.

Some questions:

I know the 3rd members are not interchangable, so I'll have to gear the new 3rd member.

I know that locker selection is crappy, but that's what I own a TIG welder for.

I do not know if the pinion yoke has the same bolt pattern / centering bore as a 4cyl third. I'm hoping it does, as my driveshafts are complicated enough to source parts for now, I'd like to keep the same yokes as I currently use.

I know all the Tundras have rear discs. I am currently drum brakes, but I'm thinking the discs will be a good upgrade. Will my stock zuk master cylinder keep up? It has pretty good brakes now with the front disc / rear drum combo. I've modified the brake system on the zuk to be like a normal vehicle. Front chamber of the M/C does the front axle, and Rear chamber does the rear axle.

Any other issues I'm not thinking of?

Thanks for the help!

I have an offset fj80 rear axle that you WON'T break:grinpimp: It's wider and stronger than any other toy axle. Full floater with discs. $500 complete.

I have an offset fj80 rear axle that you WON'T break:grinpimp: It's wider and stronger than any other toy axle. Full floater with discs. $500 complete.

What's the width? What's the Gear Ratio? How far offset? Does it have coil / link brackets already setup on it?

Mike

here is a pic of my e-locked and disc braked rear from Sky-Manufacturing, Works great, been running it for 3 years with no problems.

http://home.comcast.net/~samyota86//rearaxle.jpg

Just find a offset rear end out of a fj-40 or 60 series. I am currently puttnig a set out of a fj-62 in my zuk the rear is I believe about 59" + or - .

Alot more selection, cheaper, less work than cutting up the tundra axle and you get a bigger pinion than your current toy axle. If you decide to go that way send me a pm if you have any questions. Bart

If you're looking at a Tundra or T100 axle, but want it to be offset, why not look at FJ80? They are passenger side offset. 4.10 stock gears, but can be geared up, I believe to 5.29.

In looking for axles between 1993-1997 keep your eyes out, a lot of them came with factory E lockers.

They come stock with coil spring cups and stuff..

http://www.granitepath.com/~kd7hcg/pictures/toyaxles/DCP_6510.jpg

We cleaned em up:

http://www.granitepath.com/~kd7hcg/pictures/toyaxles/DCP_6532.jpg

and put leaf spring mounts on them.

http://www.granitepath.com/~kd7hcg/pictures/toyaxles/DCP_6579.jpg

OK, my reply to my post after rereading your first post and thinking a little.

FJ80 axle width is 63.5".

This might be too wide.

here is a pic of my e-locked and disc braked rear from Sky-Manufacturing, Works great, been running it for 3 years with no problems.

http://home.comcast.net/~samyota86//rearaxle.jpg

Huh, I didn't think Sky started selling that axle until about 2 yrs ago, did you get a prototype or something? If you have the money, that's the way I would go, great product.

Here is another option, and the way I did mine since I'm a little cheap. I took a 58" wide mini truck axle, shortened the passenger side 1.5". That way you can run a stock 55" axle shaft in there and not worry about a custom shaft should you ever break it. Then I run a 1.5" spacer on the driver side, that way I get the full 3" offset and the 58" wide stance. Then I run 1.5" spacers on the front 55" axle to bring the width up to match the rear 58". Works great for me, no driveline issues, been running it for over 2 yrs.

I was thinking an FJ-60 axle would be too expensive... but with the quotes I'm getting ($500) for a tundra axle, I may have to change my mind. What do FJ-60 rear ends usually go for?

Late Toy 58" cut 3" out of right side. Moser cut and respline axle shaft 3" = cheap. Plus I run 1 1/2 " spacers each side:

OK,

Am I search button fawktarded, or is there not a post with a complete listing of various rear axles and their shaft lengths?

I'm trying to find a shaft combination that will let me blend another axle with my stock 85 rear and make an appropriately offset housing.

Anyone? Anyone? Bueller?

Do I need to pull my '85 shafts and start a thread to compile the info?

Mike

Huh, I didn't think Sky started selling that axle until about 2 yrs ago, did you get a prototype or something? If you have the money, that's the way I would go, great product.

Here is another option, and the way I did mine since I'm a little cheap. I took a 58" wide mini truck axle, shortened the passenger side 1.5". That way you can run a stock 55" axle shaft in there and not worry about a custom shaft should you ever break it. Then I run a 1.5" spacer on the driver side, that way I get the full 3" offset and the 58" wide stance. Then I run 1.5" spacers on the front 55" axle to bring the width up to match the rear 58". Works great for me, no driveline issues, been running it for over 2 yrs.


It wasnt a prototype or anything, but it was a long time ago. maybe not 3 years but more than 2:confused: either way it works great. its lighter and offers more ground clearance than the FJ60. I did some trading with Sky for the rear axle and disc brackets so I dont remember what it cost at the time. As for the tundra axle shaft, try http://www.car-part.com I think I got one for around $125.00. Good luck.

OK,

Am I search button fawktarded, or is there not a post with a complete listing of various rear axles and their shaft lengths?

I'm trying to find a shaft combination that will let me blend another axle with my stock 85 rear and make an appropriately offset housing.

Anyone? Anyone? Bueller?

Do I need to pull my '85 shafts and start a thread to compile the info?

Mike

OK, I'm starting to guess at this:

My '85 rear has 2" difference in length from the pumpkin to the backing plate, right - left. So I'm assuming that means 2" difference in shaft lengths.

IF this is a decent assumption, then 55" wide -2" offset / 2 = 26.5" long short side (wheel flange to center of cross shaft.

If the same offset is present in a Taco rear end, then 60.75" wide + 2" offset / 2 = 31.375" long side. We'll call it 31.5"

So I could Get a Taco axle and modify as follows:

Use my '85 center section and keep as much of the axle tubes attached as possible.

Use the Tacoma axle tubes only, from the center section out.

Sleeve / splice the tubes so that I have proper lengths to use the '85 short side shaft in the passenger's side, and the long side tacoma shaft in the driver's side.

This should give me a 58" or so track width with almost 5" of offset.

This would give me almost perfect driveshaft angles right - left, and keep me in stock length shafts.

Now the quesiton is, can I use the '85 shaft and wheel bearing with the Taco bearing race, brakes, etc.

Did any of the taco's have rear discs?

How much can I expect to pay for a non e-locked tacoma rear axle?

So here are my guesstimated numbers... assuming a 2" offset to the diff in a tacoma... if there's more offset, it just makes my idea work better.

'85 axle, 55" wide, 26.5" short side, 28.5" long side
'86 axle, 58" wide, 28" short side, 30" long side
Tacoma axle, 60.75" wide, 29.375" short side, 31.375" long side

Anyone know if I'm getting these numbers right?

OK, I searched all night and found very little...

apparently IFS and TACO rear ends have symetrical shafts?

Listed in PIG's thread about new cromolly rear shafts:

Taco 29 1/8 per side
IFS 28 1/8 per side.

Anyone know if the 85 axles are also symetrical?

Yes they are. They measure 23 5/8 in the dark at 11:00 at night.:D

Why dont you just run a Waggy 44 and be done with it! Neewbie 2 cents.:D

hmmmm

5 1/2" shorter than a Tacoma shaft.... that would give me 2 3/4" offset. Not as good as I was hoping, but still a help.

Of course, narrowing a tacoma axle by 5 1/2" would leave me back at stock mini truck width :puke: I suppose I could run spacers on the rear as well....

Why dont you just run a Waggy 44 and be done with it! Neewbie 2 cents.:D

Too heavy, not enough diff clearance for my 36" iroks, too hard to make that big ass pig fit around a fuel cell, too hard to weld link brackets onto the cast iron housing.

Yes they are. They measure 23 5/8 in the dark at 11:00 at night.:D

hmmmm
23 5/8*2=47 1/4 doesn't add up for a 55" track width.

You sure you didn't mean 26 5/8"????

Mike

Oops. That's the measurement from the end of the splines to the back side of the backing plate that mounts to the axle housing. So the measurement I gave is the part of the shaft that is actually inside the housing when it's all bolted up.

You'll have to add another 3 1/4 if you want the total length of the shaft from the splines to the WMS.

My measurements aren't dead on. They could be off by an 1/8 or so. They're close enough though. :D

Oops. That's the measurement from the end of the splines to the back side of the backing plate that mounts to the axle housing. So the measurement I gave is the part of the shaft that is actually inside the housing when it's all bolted up.

You'll have to add another 3 1/4 if you want the total length of the shaft from the splines to the WMS.

My measurements aren't dead on. They could be off by an 1/8 or so. They're close enough though. :D

Got it, thanks for measuring... agreed, close enough.

Mike

Mike, I can't help much, but call me and tell me what measurments you want from a non-trd/e-locker rear axle. And no Taco's came with rear disc.

So here are my guesstimated numbers... assuming a 2" offset to the diff in a tacoma... if there's more offset, it just makes my idea work better.

'85 axle, 55" wide, 26.5" short side, 28.5" long side
'86 axle, 58" wide, 28" short side, 30" long side
Tacoma axle, 60.75" wide, 29.375" short side, 31.375" long side

Anyone know if I'm getting these numbers right?


An 85 rear Toyota axle has the same size shafts on both sides. I have a RH and LH shaft sitting in my garage and they are identical except for the piston location and where the e-brake hooks up (positions are mirrored).

what year tundra/ t100 search car-parts came up empty

I'm getting sick of breaking toy CV's from bending them too much. i did this to my toy shaft, improved working angle a ton! Good reading. This may be why the driveshaft is grenading? http://www.4x4wire.com/toyota/tech/cvmod/

you have a FJ40 rear, cheater!

you have a FJ40 rear, cheater! Yeah, but that actually forces more vertical movement of the pinion as the RR tire cycles up and down. A centered diff doesn't see this as much.

What's the track width on an FJ40 rear axle? Just wondering how well it will match up with my Toy pick up front. What's the best FJ40 rear axles to look for?

i did this to my toy shaft, improved working angle a ton! Good reading. This may be why the driveshaft is grenading? http://www.4x4wire.com/toyota/tech/cvmod/

The 84-85 CV's are the best, no mods required to get around 35 degrees out of them. The IFS CV's need to be clearanced as per the article. I learned this the hard way, bought a used 86 CV, had it lengthened and found out it didn't have enough angle with the rig at ride height.

What's the track width on an FJ40 rear axle? Just wondering how well it will match up with my Toy pick up front. What's the best FJ40 rear axles to look for?

It's the same as a narrow mini rear (55 inches?). Matches quite well with the mini front, but the pumpkin is huge. The best one to look for is the newest one you can find, up to 78 or so.

http://www.pirate4x4.com/forum/showthread.php?t=18102

Philthy,
Good link, thanks. Now I know what to look for.:)

FJ-60s and FJ-40s around here go for about $200-$400 a set.
As for the the clearance issues either run it stock or shave the diff.
I would imagine that you would be fine with 36" Iroks. That is what I will be upgrading to soon.

The question about better axles try to get a set that has the disk brakes on the front verus the drums. I don't remeber what year they started putting disks on the fronts.